Apparatus for treating yarn



April 12, 1932. A. H. JUNKERS 1,854,040

APPARATUS FOR TREATING YARN Filed Sept. 24, 1929 sured. Further, whilein treating hanks only te med AP i2, 1932 ADOLF HEINRICH JUNKERS, FRHEYDT, GERMANY- APPARATUS FOR TREATING YARN Application filed September24, 1929, Serial No. 394,900, and in Germany September 29, 1928.

The invention concerns an apparatus for accomplishing yarn treatments,which usuall are accomplished on yarn hanks, as especia ly the brushingoperation serving for the production of strong polished yarn (in Germanycalled Eisengarn) and other treatments by mechanically acting tools.

The essential feature consists therein, that the yarn is treated bybrushes or the like in running state, while passing as a single yarn 01'as a group of several parallel yarns with V freely extended multiplewindings around two orsmore drums, whereby said drums have axles beingessentially parallel and crossing each other in different planes, andhave diameters being greater where the yarn shall have a greater lengthand smaller .where the yarn shall have a minor length. Thereby acompletely new mode of operation is attained. While in treating a' hankthe single yarn windings have never a completely uniform tension and lieover each other in multiple layers without order, in the new process theyarns have in all windings a desired tension in spite of lengthening orshortening of the yarn during the treatment and are exposed to thebrushes or other tools in complete order and separation from each other,so that a by far more uniform treatment is enone or two circulations ofthe hank is used and any irregularity acts upon all yarn windings atonce, so as to later appear on each winding, according to the-inventioneach portion of the yarn passes all treating points after each other, sothat a completely uniform treatment is ensured. Finally, while a hankcan only slowly circulate, in the invention the the work becomes ofstill higher'uniformity,

and under certain circumstances the moveinent of the yarn may act astreating movement, the brushes or other tools remaining at rest andbeing more easily subjected to inspection and cleaning. Moreover thehank treatment, in consequence of the relative shortness of the hank,needs much knotting points, whereas in the invention any desired lengthof yarn can be made without knots,

yarn can run with such a high velocity, that and spools without knotscan be produced.

The inventionfurtherconcerns several details of the apparatus as furtherdescribed.

In the accompanying drawings,

Figs. 1, 2 and 3 are an end View, partly in section, a lateral view andan enlarged par-. tial top view of a winding device comprising a yarntreating device and a store inserted in the yarn running out from it.

' In the machine according to Figs. 1 to 3 g a great number of strandsof a single yarn is extended in series. Several such arrangements may beunited in a single machine having sufficiently long drums, but with eachyarn wound round both drums in multiple threads. The arrangement is thefollowing.

A casing 11 is partly closed by a front wall 12 and contains an innerdivision wall 13 and behind the latter a heating body 14. A fan 15 isconnected to thefore compartment for sucking the air warmed on theheater 14 to the fore chamber and then leading it ofi, whereas fresh airenters from below to the heater.

in the fore chamber, two drums 16, 17 are mounted, the axes of whichcross each other in difierent planes. in the illustrated example thelower drum 16 has its axis parallel to the longitudinal direction of theentire apparatus, whereas the. upper drum is' mounte obliquely in thehorizontal lane, so that a yarn wound in many. win ings round the drumsis able to continuously run round them with properly distanced yarnwindings. A belt drive 18, shownin dash and dotted lines serves fordriving both drums in equal direc tion. With strong yarn only one drumneeds to be driven as the yarn sufices for driving the other. I y

The kind of crossing of the drum axes and the shape of the drums 16, 17depends upon the kind of yarn to be treated and-upon the kind oftreatment.

if, for example, the yarn" increases in length during the treatment, asin mercerizing or spinningfithe shortest distance between both drumaxes, the crossing point, as shown in Fig. 1 lies on the yarn entrance,

so that against the yarn exit the drum distance is augmented more andmore, and the yarn is everywhere held under tension. If we creases inlength, and decreasin inversely the yarn decreases in len h, the Q aesired tension and eventually stretched -ed by as desired.

A yarn tensioning device for iding the yarn from a spool 19 to the macine is constructed as follows. Two small crossed feeding drums 20, 21 ofessentially the same arrangement as the main drums 16, 17 receive theyarn, coming from the spool 19, in multiple yarn windings and deliver itover a roller 22 to the main drums 16, 17. For setting the yarn undertension, at least one-of the drums 20, 21 is provided with a brake band23 loadspring).

The yarn coming loosely from the spool 19 is hereby more and more setunder tension throu h theidevice.

A rther yarn storing device is inserted into the yarn running out fromthe treating drums 16, 17 said device also consisting of a air of smalldrums 25, 26 with axes crossmg each other. These drums are also drivenis axially displaceable against the main driv-' from the machine driveand surrounded by the yarn in multiple windings. These drums 25, 26 areheld-in bearings only'on one end so as to allow the yarn to be drawnofiover the other free head ends with a velocityindependent upon thewinding up velocity. The drive of said drums 25, 26 is a regulable one,the drums (or at least one of them) being driven by a conical pulley 27which ing belt 18 of the entire machine. For guiding the yarn an ovalcircular guide cup 28 is arranged before the free ends of the drums 25,26, over the edge of which cup the yarn runs in beingdrawn off. On saidcup a guiding arm 29 is mounted which guides the, yarn by a uide eye.Said arm 29 is mounted on a sha 30 by aid of a frictional clutch(similar to a watch hand clutch), and the shaft 30 is driven by a beltdrive 31 from any speed changing gear, such as stepped or conicalpulleys, and said gear is driven from one of the drums 25, 26 and in thesame direction as these. 7 K

interchangeable weights 24 (or by a 21, and runs with the desired ten--The action is the following. If the spoolin device draws oh the yarnwith a higher velocity than it is delivered from the treating device,more and more ,windin s are drawn off over the head end .of the evice,

the guide arm 29 being slowly rotated by the loose only a part of theyarn windings by the drawing ofi over the head ends. If the spoolvingdevice operates with a smaller velocity than the treating device, thedrive 30, 31 acts through. the frictional clutch on the guide arm 29, sothat the latter follows the yarn on the'cores and au cuts the number ofwindings onthem. possibility of filling the cores with yarn windings inthe begmningof operation.

In this way independently u on the enhis gives also the trance of yarnto the storing device, the yarn can be delivered to any winding devicew1th any desired velocitv and with a uniform tension regulated by thefrictional clutch.

For automatically obviating an accumulation of too much windings on thedelivering drums 25, 26 the following device 1s prov1d ed. Between saiddrums an oblique lever 32 with a balancing weight 33 is so arranged thatit lies in the region of the-last arn windm s on said drums. Thereby asli ing ofi' of sand windings over the heads of said drums 1s; obviated,and an electric contact 34 is closed by said lever. A magnet coil 35 isthereby fed with electric current and attracts its, core 36, whichagainst the tension of a spring 38 displ'aces a belt fork 37 so as todisplace the drivin belt 18 of the spooling device on the conica pulleyof the latter. This s oohng device is thereby accelerated and etractsmore yarn -so as to diminish the number of windings on the drums 25, 26.Thereupon the contact 34 is again ope hned and the normal running isrestored. e obli ue position of the lever. 32 allows several s eets ofyarn to press on said lever in unison, so that also very thin yarn canoperatesaid lever without breaking. For strong yarn a simple up ri htlever is sufiicient.

or treating the yarn, rotary brushes 42 are applied to the front andrear side of the small velocities in one or the other direction, so asto apply successively their diiferent por-' 'tionsto the yarn and ofierthe other portions to inspection and, if necessary, to cleaning.

' 21 and the roller 22 three brushes 45, 46, 47

I co

tea e040 A drive with a circumferential motion coin cident with the yarnrunning direction obviates the accumulation of dirt on the yarn,

elastic drive, that it swings up and down between the yarns and ifdesired swings fully out between them on the top end of the swingingmotion, for separating yarns adhering to each other. A drum 44 connectedto said comb serves for being applied to the yarn when the machine is atrest, for holding the yarn under tension when the brushes or other toolsare interchanged.

In soniecases said comb 44 may also be stationary with the teeth underan acute angle with respect to the yarn, which then climbs over them,if, due to the yarns sticking together, the tension becomes too great.

For preparing the yarn to the-"treatment, in the inlet between thetensioning drums 20,

are applied to the yarn, the first brush 45 being moistened by water or.steam, the second .brush 46 being filled withparafiin or a similarsmoothening material, and the third brush 47 serving for distributingthe water and paraflin and removing their abundance.

For cleaning the main drums 16, 17, which are constructed as skeletondrums the following device is arranged. Each drum 16, 17

has on its ends smooth friction rims 48, and

shafts49 supporting cleaning drums 50 and friction rims 51 are mountedin elastically applied bearings in such way as to be driven from thedrums 16, 17 by the friction rims 48, 51. Said cleaning drums'50 therebygrind on the skeleton drums so as to clean them from dye and otherimpurities deposited thereupon. They extend only over a portion of thelength of the main drums 16,17 near the yarn entrance, as only inthis'portion impurities are encountered.

The operation of the entire machine is the following. The dyed yarn,runs from the spool 19, which eventually is enclosed in a usual steamchamber through the tensioning device 20, 21 to the brushes 45, 46, 47,of which the first brush 45 can be omitted especially in the case ofusing the said steamchamber, polished by the rotary brushes and at oncedried'by the warm air current, each portion passing very often insuccession the brushes and the air current, so that completely polishedyarn is produced. 'llhe spooling device forms said yarn immediately tospools ready for'use.

The machine is also useful for difi'erent other treatments of yarn, forexample for and after this preparation the yarn is regulable drive.

waxing, for quenching or stewing, or for brushing operations innaphtholic colouring processes. In much of these processes no moist anddyed spools are used, and therefore the drying device is not to be putin action. For such processes the velocities of brushing or the likehave to be altered as far as necessary, or the brushes are tobe replacedby other tools. lln all such processes the crossed drums are able tosurely hold each yarn under tension due to the adapted choice of thesituation of their crossing point and due to the adaption of theirdiameter variations.

I claim:

pecially polishing it, comprising in combination essentially parallelrotatable drums, the

axles of which cross each other in different planes, so as to receive ayarn wound around said'drums with freely extended multiple windingsarranged in the manner of a single thread screw, the diameter of saiddrums being greater where the yarn is of greater length and smallerwhere the yarn is of minor length.

2. An apparatus for treating yarn and especially polishing it, asclaimed in claim 1, wherein a comb is inserted between the yarn sheetsand driven so as to be swung to and fro between them in their lengthwisedirection and fully out of touching them on the one end of the swin ingmotion.

3. An apparatus or treating yarn and especially polishing it,as claimedinclaim 1, wherein a comb is insertedbetweenthe yarn sheets, the teethof said comb being arranged under an acute angle with respect to theyarn in such direction, that the yarn under too great tension is able toclimb over said teeth.

compartment is provided behind said, wall,

and a warm air current generator is conneoted to said compartment so asto act on the yarn being extended behind said wall.

5. An apparatus for treating yarn and especially polishing it, asclaimed in claim 1, wherein for tensioning the yarn running to the drumsa pairof small drums witharres crossing each other in difi'erent planesis inserted before said main drums, and at least one ofsaid small drumsis provided with a braking device. i

6. An apparatus for-treatlng yarn and especially polishing it, asclaimed 1n claim 1, wherein to tension tile yarn running from the drumsa pair of small delivering drums w th axes crossing each other indifferent planes is inserted after said main drums, sa1d deliveringdrums having one end free for axial-- ly drawing off the yarn, saiddelivering drums being provlded witha and atleast one of- 7. Anapparatus for treating yarn and especially polishing it, as claimed inclaim 1, wherein for tensioning the yarn running from the drums a. pairof small delivering drums with axes crossing each other in difierentplanes is inserted after said main drums, said delivering drums havingone end free for axially drawing oil the yarn and covered by a cupguiding the yarn round its edge,

and at least one of said delivering drums being provided with aregulable drive,

8. An apparatus for treating yarn and especially polishing it, asclaimed in claim 1, wherein for tensioning the yarn running from ,thedrums a pair of small delivering drums-with axes crossing each other indifferent planes is inserted after said mam drums, said delivering drumshaving one end free for axially drawlng oil the yarn, a guiding memberis rotatably supported oppositely to said free end and adapted to guidesaid axially drawn yarn, braking means are provided on said guidingmember, and a regulable drive is provided at least on one of saiddelivering drums. v

9. An apparatus for treating am and especially polishing it, as claimein claim 1,

wherein for tensioning the yarn running from the drums apair of smalldelivering drums with axes crossing each other in different planes isinserted after said main drums, said delivering drums having one endfree for axially drawing oil the yarn, a guide ing member is rotatablysupported on a driv-' ing shaft by aid ofa friction clutch, o positelyto said free end and adapted to gui c said axially drawn yarn, and aregulable drive is, provided at least on one of said delivering drums.

10. n apparatus for treating yarn and especially polishing it, as laimedin claim 1, wherein for tensioning the yarn running from the drums apair of small delivering drums with axes crossin each other indifi'erent planes is inserted a r said main drums, said delivering drumshaving one end free for axially drawing off the yarn, and at least oneof said delivering drums being provided with a regulable drive-and anabutment is arranged near the free end of said delivering drums, so asto revent the yarn from descending over said ree end.

11. An apparatus for treating yarn and especially polishing it, asclaimed in claim 1,

wherein for tensioning the yarn running from the drums a pair of smalldelivering drums with axes crossing each other in different planes isinserted after said main drums, said delivering drums having one endfree for axially drawmg ofi the yarn, and at least one of saiddelivering drums being provided with a regulable drive, a contact leveris arranged near the free end of said delivering drums, so as to bedepressed by a yarn travelling too far, andan electromagnetic despeedindependent of the speed of delivering 1 the yarn to the bobbins.

13. An apparatus for treating yarn and especially polishing it, asclaimed in claim 12,

wherein adevice for tensioning the yarn running to said drums isinserted before said drums.

14. Apparatus for treating and polishing yarn, comprising twoessentially parallel r0 tatable drums, the axles of which cross eachother in difi'erent planes, so as to receive a yarn wound around bothsaid drums with freely extended multiple Windin arranged in the mannerof a single threa screw, the cross point of the axes of said two drumsbein arranged on that point of the length of the rums on which the yarnis of the shortest length, means for rotating one of said drums, andtreating tools, such as brushes, appliedto the freely running yarnextended between said drums. In witness whereof I aflix my signature.ADOLF HEINRICH J'UNKERS.

